Isa bin Msawr al-Jwhry عيسى بن مساور الجوهري · The Book of 'Umra

"Habib bin Abi Thabit informed us from Ibn 'Umar, that the Messenger of Allah said: 'There is no 'Umra and no Ruqba. Whoever is given something on the basis of 'Umra or Ruqba, it belongs to him for the rest of his life and after he dies.'"