One day in the Masjid of the Prophet ﷺ ibn Mas’ood RA was praying while the Prophet (ﷺ) was sitting with Abu Bakr RA and Umar RA. He said referring to ibn Mas’ood, “Ask, and you will be given!” The next day, Abu Bakr RA met ibn Mas’ood to give him the glad tidings of what the Prophet ﷺsaid of him. They asked him what he made Dua for and he replied:
اللّٰهُمَّ إِنِّي أَسْأَلُكَ إِيمَانًا لَا يَرْتَدُ وَ نَعِيمًا لَا يَنْفَدُ وَ مُرَافَقَةَ مُحَمَّدٍ فِي أَعْلٰى جَنَّةِ الْخُلْدِ
O Allah, I ask you for firm faith that does not revert, and bliss that never ends, and then companionship of Muhammad at the highest (level) of eternal Paradise.
Musnan Ahmad, An Nisai, Hakim & AT tabrani