“Whoever claims to belong to someone other than his father, or (a freed slave) who claims that his Wala is for other than his real master, the curse of Allah (SWT), the angels and all the people will be upon him.” (Using translation from Ibn Mājah 2609)
أَنَّهُ سَمِعَهُ يَقُولُ إِنَّ رَسُولَ اللهِ ﷺ قَالَ مَنِ ادَّعَى إِلَى غَيْرِ أَبِيهِ أَوْ تَوَلَّى غَيْرَ مَوَالِيهِ فَعَلَيْهِ لَعْنَةُ اللهِ وَالْمَلائِكَةِ وَالنَّاسِ أَجْمَعِينَ