Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
muslim:1259aZuhayr b. Ḥarb And ʿUbayd Allāh b. Saʿīd > Yaḥyá Wahū al-Qaṭṭān > ʿUbaydullāh > Nāfiʿ > Ibn ʿUmar

Until he obrerved the dawn prayer. Yahya (another narrator) said: Until it was dawn.  

مسلم:١٢٥٩aحَدَّثَنِي زُهَيْرُ بْنُ حَرْبٍ وَعُبَيْدُ اللَّهِ بْنُ سَعِيدٍ قَالاَ حَدَّثَنَا يَحْيَى وَهُوَ الْقَطَّانُ عَنْ عُبَيْدِ اللَّهِ أَخْبَرَنِي نَافِعٌ عَنِ ابْنِ عُمَرَ

أَنَّ رَسُولَ اللَّهِ ﷺ بَاتَ بِذِي طَوًى حَتَّى أَصْبَحَ ثُمَّ دَخَلَ مَكَّةَ قَالَ وَكَانَ عَبْدُ اللَّهِ يَفْعَلُ ذَلِكَ وَفِي رِوَايَةِ ابْنِ سَعِيدٍ حَتَّى صَلَّى الصُّبْحَ قَالَ يَحْيَى أَوْ قَالَ حَتَّى أَصْبَحَ