Sunan Ibn Majah, Book 5, Hadith 1077 (In-Book) ⓘ
It was narrated from Anas bin Malik that the Messenger of Allah spat on his garment while he was performing prayer, then he rubbed it.
حَدَّثَنَا زَيْدُ بْنُ أَخْزَمَ، وَعَبْدَةُ بْنُ عَبْدِ اللَّهِ، قَالاَ حَدَّثَنَا عَبْدُ الصَّمَدِ، حَدَّثَنَا حَمَّادُ بْنُ سَلَمَةَ، عَنْ ثَابِتٍ، عَنْ أَنَسِ بْنِ مَالِكٍ، أَنَّ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ بَزَقَ فِي ثَوْبِهِ وَهُوَ فِي الصَّلاَةِ ثُمَّ دَلَكَهُ .
also referenced under: Hadith 1024 (Reference) & Volume 2, Book 5, Hadith 1024 (DarusSalam)