وَ إِنَّ رَسُولَ اللَّهِ ص اغْتَمَّ فَأَمَرَهُ جَبْرَئِيلُ ع- أَنْ يَغْسِلَ رَأْسَهُ بِالسِّدْرِ وَ كَانَ ذَلِكَ سِدْراً مِنْ سِدْرَةِ الْمُنْتَهَى.
English translationBab Ul Qaim Publications
Hadith.294 - And when the Messenger of Allah (sw) was distressed, Archangel Jibril (as) instructed him to wash his head with sidr (lote tree leaves), and this sidr was from the lote tree of Sidrat al-Muntaha (the utmost boundary in the heavens)."
Translation: Bab Ul Qaim Publications·Thaqalayn link·The Arabic above is the original.