Imam al-Shafi’i, Allah have Mercy upon his soul, famously recited:
“O members of the Household of the Messenger of Allah! ﷺ Loving you is an obligation, which Allah has revealed in the Quran.
On the greatness and loftiness of your station, it is enough that anyone who does not invoke blessings upon you, then it is as if he has not invoked blessings at all.”
يا أَهْلَ بَيْتِ رَسولِ اللهِ حُبُّكُمُ فَرْضٌ مِنَ اللهِ في ٱلْقُرْآنِ أَنْزَلَه
كَفاكُمْ مِنْ عَظيمِ ٱلْقَدْرِ أنَّكُم مَنْ لَمْ يُصَلِّ عَلَيْكُمْ فَلا صَلٰوةَ لَه