There are authentic Hadeeths that the person who dies on the love of
the Holy Prophet (SAWA) and who has the love of the Holy Prophet
(SAWA) and the Ahlul Bayt (AS) will die as a martyr. من مات على حب ال محمد مات شهيدا
This Hadeeth is narrated not only in Shia books but also in Sunni books like Tafseer al-Kashshaaf by al-Zamakhshari (volume 4),
Tafseer al Fakhr al–Raazi (volume 27)
and Tafseer al-Qurtobi (page 5841).
No doubt sincere followers of Ahul Bayt (AS) sincerely wish to gain
the status of being martyred in the way of Allah (ASWT) and that
sincere intention makes them entitled to the Grace of Allah (ASWT) who
grants the reward of Shaheed to them according to their sincere intentions.