In regard to the Verse of the Quran = 42:23 Ayatul Muwaddah the great Imam Shafi’ rahimahu Llah beautifully recited a poem:
O members of the Household of the Messenger of Allah! 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
He loved this verse and others so much so, that he made it obligatory according to his school to recite the Durud Ibrahimiyyah within Salat.