"Abdul-Jabbar bin Al-'Ala' narrated to us, he said: 'Sufyan narrated to us from Ibn Abi Najih, from Tawus, and perhaps it is from Ibn 'Abbas, who said: There is no Ruqba, and whoever gives a gift on the basis of Ruqba, it is part of his estate.'" (Using translation from Nasāʾī 3708)
قَالَ رَسُولُ اللهِ ﷺ «لَا تُرْقِبُوا فَمَنْ أَرْقَبُ شَيْئًا فَسَبِيلُ الْمِيرَاثِ»