ENOfficial
It was narrated that ‘Abdullah bin Abi Mulaikah said: It was said to Abu Bakr: O khaleefäh of Allah. He said: Rather slam] the khaleefah (lit successor) of Muhammad (ﷺ), and I am pleased with that,
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا مُحَمَّدُ بْنُ يَزِيدَ، حَدَّثَنَا نَافِعُ بْنُ عُمَرَ الْجُمَحِيُّ، عَنْ عَبْدِ اللَّهِ بْنِ أَبِي مُلَيْكَةَ، قَالَ قِيلَ لِأَبِي بَكْرٍ رَضِيَ اللَّهُ عَنْهُ يَا خَلِيفَةَ اللَّهِ فَقَالَ بَلْ خَلِيفَةُ مُحَمَّدٍ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ وَأَنَا أَرْضَى بِهِ.
sunnah.com