'Abdullah gave 'Alqama the kunya Abu Shibl when he had no children.  

أَنَّ عَبْدَ اللهِ كَنَّى عَلْقَمَةَ أَبَا شِبْلٍ وَلَمْ يُولَدْ لَهُ  

'Alqama said, "'Abdullah gave me a kunya before I had a child."  

عَنْ عَلْقَمَةَ قَالَ كَنَّانِي عَبْدُ اللهِ قَبْلَ أَنْ يُولَدَ لِي