Is there any reference that Imam Muhammad ibn Sirin would lower his voice when he was with his mother, so much so that an onlooker would think he was ill?
Yes. ‘Allamah Dhahabi (rahimahullah) has cited this. The narration is as follows:
Ibn ‘Awn (rahimahullah) relates, “When Muhammad ibn Sirin (rahimahullah) was in his mother’s presence, he would talk in such a low tone that you would think he was ill.”
(Tarikhul Islam, vol. 5 pg. 158 and Siyaru A’alamin Nubala, vol. 4 pg. 620)
And Allah Ta’ala Knows best.
Answered by: Moulana Suhail Motala
Approved by: Moulana Muhammad Abasoomar