Sahih Muslim
Sahih Muslim 1187 c
Clarifying that it is better to enter Ihram when a person's mount sets off with him, heading towards Makkah, not straight after the two rak'ah
Arabic hadith text
وَحَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا عَلِيُّ بْنُ مُسْهِرٍ، عَنْ عُبَيْدِ اللَّهِ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، - رضى الله عنهما - قَالَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلمإِذَا وَضَعَ رِجْلَهُ فِي الْغَرْزِ وَانْبَعَثَتْ بِهِ رَاحِلَتُهُ قَائِمَةً أَهَلَّ مِنْ ذِي الْحُلَيْفَةِ .
Translation
Ibn 'Umar (Allah be pleased with them) reported that the Messenger of Allah (ﷺ) pronounced Talbiya in Dhu'l-Hulaifa as he put his feet in the stirrup and his camel stood up and proceeded.