When you reach the door of the mosque, know that you have come to the door of a mighty King. Only the purified tread on His carpet, and only the true are allowed to sit with Him. So be alert in your approach of the court of the awesome King, for you are in great danger if you are heedless. Know that He can do whatever He wishes in justice and overflowing favour with you and by you. If He inclines to you with His mercy and overflowing favour, He has accepted a small amount of your obedience and has given you a great reward for it.
If He demands His due of truthfulness and sincerity by His justice towards you, He has veiled you and rejected your obedience, even if you have had obedience in abundance. He does what He wills. Acknowledge your incapacity, inadequacy, fragility, and poverty before Him, for you have turned yourself to worshipping Him and being close to Him. Turn to Him, and know that neither the secret nor the revealed part of any creature is hidden from Him. Be like the poorest of His servants before Him: strip your heart of every occupation which might veil you from your Lord, for He only accepts the purest and most sincere. Look to see in which register your name will be written.
If you taste the sweetness of His intimate conversation and the pleasure of His addressing you, and drink the cup of His mercy, and those favours he has bestowed on you and those of your requests which He has accepted, then you have served Him properly, and may therefore enter the sphere of His permission and security. If not, then stand as one whose power and ability have been cut off, and whose term has come to an end. If Almighty Allah knows that in your heart you are sincerely seeking refuge with Him, He will regard you with compassion, mercy and kindness. He will cause you to succeed in that which He loves and which is pleasing to Him, for He is generous. He loves noble generosity and the worship of those who need Him, and who are burning up at His door seeking His good pleasure. Allah said,
أَمَّن يُجِيبُ الْمُضْطَرَّ إِذَا دَعَاهُ وَيَكْشِفُ السُّوءَ