كتاب التفسير
65
Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
(12)
Allah's Statement: "...Ask not about things which, if made plain to you, may cause you trouble..." (V.5:101)
(12)
Sahih al-Bukhari 4622

Narrated Ibn `Abbas:

Some people were asking Allah's Messenger (ﷺ) questions mockingly. A man would say, "Who is my father?" Another man whose she-camel had gone astray would say, "Where is my she-camel? "So Allah revealed this Verse in this connection: "O you who believe! Ask not about things which, if made plain to you, may cause you trouble." (5.101)

حَدَّثَنَا الْفَضْلُ بْنُ سَهْلٍ، حَدَّثَنَا أَبُو النَّضْرِ، حَدَّثَنَا أَبُو خَيْثَمَةَ، حَدَّثَنَا أَبُو الْجُوَيْرِيَةِ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ قَالَ كَانَ قَوْمٌ يَسْأَلُونَ رَسُولَ اللَّهِ صلى الله عليه وسلم اسْتِهْزَاءً، فَيَقُولُ الرَّجُلُ مَنْ أَبِي وَيَقُولُ الرَّجُلُ تَضِلُّ نَاقَتُهُ أَيْنَ نَاقَتِي فَأَنْزَلَ اللَّهُ فِيهِمْ هَذِهِ الآيَةَ ‏{‏يَا أَيُّهَا الَّذِينَ آمَنُوا لاَ تَسْأَلُوا عَنْ أَشْيَاءَ إِنْ تُبْدَ لَكُمْ تَسُؤْكُمْ‏}‏ حَتَّى فَرَغَ مِنَ الآيَةِ كُلِّهَا‏.‏
Reference : Sahih al-Bukhari 4622
In-book reference : Book 65, Hadith 144
USC-MSA web (English) reference : Vol. 6, Book 60, Hadith 146
  (deprecated numbering scheme)