سَهَرُ لَيلَةٍ مِن مَرَضٍ أو وَجَعٍ أفضَلُ وأعظَمُ أجراً مِن عِبادَةِ سَنَةٍ.

Staying awake from sickness or pain for one night carries a greater reward than the worship of one year.

al-Kafi, v. 3, p. 114, no. 6