Hadith 1045
۞
Hold back this young man on my behalf, lest he causes my ruin, because I am loath to send these two (meaning al-Ḥasan and al-Ḥusayn) towards death, lest the descending line of the Prophet - may Allāh bless him and his descendants - is cut away by their death.
امْلِكُوا عنِّي هذَا الْغُلاَمَ لاَ يَهُدَّنِي، فَإِنَّنِي أَنْفَسُ بِهذَيْنِ ـ يَعْنِي الحَسَنَ وَالْحُسَيْنَ (عليهما السلام) عَلَى الْمَوْتِ، لِئَلاَّ يَنْقَطِعَ بِهِمَا نَسْلُ رَسُولِ اللهِ (صلى الله عليه وآله).