Hadith 8:1719
Abu Bakr narrated to us, he said: Shareek narrated to us, from Salim, from Sa’id, and from Sa’id ibn Masruq, from Abu Salih, they both said: If he enters into Ihram while he is wearing a shirt, then he should tear it.
حدثنا أبو بكر قال حدثنا شريك عن سالم عن سعيد وعن سعيد بن مسروق عن أبي صالح قالا إذا أحرم وعليه قميص فليشقه