After the prayer and after the dhikr, I say: “O Allah, send blessings and peace upon our master Muhammad” thirty-three times. Is this a bid'ah (religious innovation)?

Question:
May Allah reward you with good. After the taslim and after the tasbih, tahlil, and tahmid thirty-three times, I say: “O Allah, send blessings and peace upon our master Muhammad” thirty-three times. Is this a bid'ah (religious innovation) and an excess?

Answer:
Sending blessings upon the Prophet (peace and blessings be upon him) is required and prescribed, but timing it at a specific time or with a specific number requires evidence. There is no evidence for this act that this questioner mentioned, nor for this number that she mentioned.