Hadith 507620
Chapter 20: Hajj - كتاب الحج
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم لَمْ يَعْتَمِرْ إِلاَّ ثَلاَثًا إِحْدَاهُنَّ فِي شَوَّالٍ وَاثْنَتَيْنِ فِي ذِي الْقَعْدَةِ .
Yahya related to me from Malik from Hisham ibn Urwa, from his father, that the Messenger of Allah, may Allah bless him and grant him peace, only did three umras, one of them in Shawwal, and two in Dhu'l-Qada.
Reference Muwatta Malik 507620
USC-MSA web (English) reference : Book 20, Hadith 57