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.
abudawud:5001Ṣafwān b. Ṣāliḥ > al-Walīd > ʿUthmān b. Abū al-ʿĀtikah > Innamā

The only reason why he asked whether the whole of him should come in was because of the smallness of the tent  

أبو داود:٥٠٠١حَدَّثَنَا صَفْوَانُ بْنُ صَالِحٍ حَدَّثَنَا الْوَلِيدُ حَدَّثَنَا عُثْمَانُ بْنُ أَبِي الْعَاتِكَةِ قَالَ إِنَّمَا قَالَ

أَدْخُلُ كُلِّي مِنْ صِغَرِ الْقُبَّةِ