ʿUyūn akhbār al-Riḍā

Hadith 169
asceticism
169 - وَبِهذَا الإِسناد، عَن جَعْفَرِ بْنِ مُحَمَّد عَلَيْهِالسَّلامُ، عَن أَبِيهِ‏ عَلَيْهِ السَّلامُ قالَ: سُئِلَ عَلِىِّ بْنِ الحُسَيْن‏عَلَيْهِمَا السَّلاَمُ لَم اُوتِمَ النَّبِي‏ صَلَّى اللهُ عَلَيْهِ وَآلِهِ مِن أَبَوَيهِ؟ قالَ: لِئَلاَّ يَجِبَ عَلَيْهِ حَقٌّ لَِمخلُوقٍ.
31-169 According to the same documentation, it is narrated that Ja’far ibn Muhammad (a.s.) quoted on the authority of his father (a.s.) that Ali ibn Al-Husayn was questioned about why the Prophet (S) was an orphan deprived of both father and mother. He (a.s.) said, “That was so that he does not have to obey any creatures.”
Source: Shaykh Muḥammad b. ʿAlī al-Ṣaduq