A son is a male offspring; a boy or man in relation to his parents.
The eldest son is responsible to perform the obligatory Qadha prayers of his father if it was missed due to a valid reason like illness etc. If the parents did not perform their obligatory prayers for no valid reason, the Qadha is not obligatory on the eldest son. Although, it is very good for him or other children to pay for persons who perform Qadha prayers on behalf of deceased persons to perform the obligatory Qadha prayers of the deceased. This will help the deceased a lot.
Yes, there are many narrations in books of Hadeeth mentioning the reward for parents who have daughters and bring them up properly, that they will be in the Paradise.
Narrated from Imam Jafar Al-Sadiq (AS) : Daughters are reward while sons are a bounty, and reward will be for those who have daughters, while bounties will be asked about. (Al-Kaafi 6:6).
The believer is happy with what ever Allah (SWT) grants him, because Allah (SWT) knows the best for us, now and every time. Allah (SWT) grants to a couple only daughters or only sons or both, and does not give some couples any children, all because of His Wisdom and Mercy on us. (Sura 42, Verses 49 and 50).
Accepting and being satisfied with the will of Allah (SWT) is very important for he believers.
1. If the deceased left only one son and one daughter, and no wife, the daughter will inherit one third and the son wll inherit two thirds.
2. If the deceased left two sons and three daughters, and no wife, the wealth left must be divided in to seven equal parts, one part ( 1/7) for every daughter and two parts (2/7) for every son.
The son must tolerate and be patient and never counter his father or hurt his feelings. Whatever wrong done by any parent must be tolerated.
It is good to talk to your father either directly or indirectly to know the reasons of his attitude towards you. That might help decreasing the misunderstanding.
Elder son is responsible to perform of arrange performing Qadha of Salaah and fasting for his deceased father and mother. Either he performs or arranges for persons who perform on behalf of the deceased.
The wisdom behind rules of Islam is best known to Allah (SWT), His Prophet (SAWA) and The Infallible Imams (AS). We believe that all the rules from Allah (AS) are based on the absolute wisdom which aims to make our life real human life and guides us to the Right Path. We might be able to know some of the reasons but we can never argue for all the reasons.
Eldest son has the responsibly for the missed prayers and fasts of his parents because they served him before other children and he has the right to acquire special personal items (like rings, watch, personal Quran etc) from his deceased parents.
This rule does not mean that other children can not do that on behalf of their parents. In fact any of them can do whatever he or she wants to fulfill on behalf of their parents, but if it was not fulfilled, then the eldest son remains responsible to complete the remaining if any.
The son must obey and go to see his grandmother. The mother has no right to prevent her son from visiting his grand mother. No obedience to any one including parents in disobeying Allah ( SWT).
There is no difference in this regard between any of the grandchildren. As long as a child lives his or her children or the children of other siblings would not inherit.
There ae different opinions among the scholars in this matter.
Al Haafidh Abu Na'eem sated in Hilyat Al-Awliyaa that Ima Al-Ridha had six sons and Jafar is one of them.
Mohammad Ibn Talha al-Shafi'ee had the same opinion.
Many of our scholars including Shaikh Al-Mufeed and Al-Erbily narrated from Imam Radha (AS) that he wl have only one son (Imam Al-Jawad) and Allah (SWT) will grant this one son lot of sons.
You are responsible about your father. Do not miss this great chance to serve him in his old age and do not listen to any one including your wife if she wants to discourage you from serving your father.
Yes, Muhammad son of Abu Bakr was from a pious lady (Asmaa' Bint Omais) who was widow of Jafar Ibn Abi Talib (AS) who was martyred in the battle of Mo'ta and is caled then Jafar Al-Tayyar. Abu Bakr proposed to that lady during his government and she could not refuse the ruler. She had from that marriage a son called Muhammad. After the death of Ab Bakr, Imam Ali (AS) proposed t this lady to look after the orphans of his brother Jafar. Muhammad Inb Ab Bakr was looked after and brought up by Imam Ali (AS) and became a very good Momin. He was with Imam Ali in fighting his enemies including fighting in the battle of jamal (Camel) led by his own step sister Aaysha daughter of Abu Bakr. Imam Ali (AS) asked Muhammad Bin Abu Bakr to accompany Aaysha from Basra back to Madina.
Some quick information about Muhammad ibn Abi Bakr:
1. Name: Muhammad
2. Father's name: Abu Bakr ibn Abdullah ibn Abi Qahafah [the first Caliph].
3. Mother's name: Asma' bint 'Umays, who was married to Ja'far ibn Abi Talib [Ja'far al-Tayyar] (a.s.), and after his martyrdom she married Abu Bakr. She gave birth to Muhammad while in the state of Ihram. After Abu Bakr's death, Asma' married Imam Ali (a.s.). Throughout her life she stayed loyal to Ahlul bayt (a.s.).
4. His birth: Year of Hajjatul-Wada'.
5. His death: 38 AH. Martyred in Egypt at the hands of Mu'awiyah.
6. He openly opposed the Khilafah of his father Abu Bakr, and from those early years he pledged allegiance to Imam Ali (a.s.).
7. He was nurtured by Imam Ali (a.s.), who treated him as his own son. He participated in the Battles of Jamal and Siffin. In the Battle of Jamal he confronted his sister 'Aishah.
8. Imam Ali (a.s.) appointed him as governer of Egypt.
9. He was martyred in a tragic way, by command of Mu'awiyah. It is mentioned in numerous sources that Mu'awiyah ordered his blessed body to be burned. See following link that mentions Sunni references for this: