Sayyidina Shaykh Ahmad al-Tijani (may Allah be pleased with him) said: "I asked the Master of Existence (salla Allahu alaihi wa aalihi wa sallam) if this hadith was authentic. He replied that it was authentic ... I then asked him if one bird is created for Salat al-Fatihi with that description? He replied that 600,000 birds with that description are created for each recitation of Salat al-Fatihi"
The Prophet (salla Allahu alaihi wa aalihi wa sallam) said, "No servant prays upon me except that the prayer exits from his mouth with such speed, staying neither in the seas nor on lands, east or west except passing by them all and saying 'I am the Salawat of Fulan bin Fulan, pray then upon Muhammad the Chosen, the Best of Creations (salla Allahu alaihi wa aalihi wa sallam) ; nothing remains therein except that they too pray upon him and Allah shall create from that Solawat a bird which as 70,000 wings and in each wings there are 70,000 feathers and in each feather there are 70,000 faces and in each face there are 70,000 mouths and in each mouth there are 70,000 tongues and each tongue praises Allāh in 70,000 languages and Allāh shall write from him [the reciter] the reward of them all.
[from: Jawahir al-Ma'ani]
اللَّهُمَّ صَل عَلَى سَيِّدِنَا مُحَمَّدٍ ۞ الفَاتِحِ لِمَا أُغْلِقَ ۞ وَالخَاتِمِ لِمَا سَبَقَ ۞ نَاصِرِ الحَقِّ بِالحَقِّ ۞ وَالهَادِي إِلَى صِرَاطِكَ المُسْتَقِيمِ ۞ وَعَلَى آلِهِ حَقَّ قَدْرِهِ وَمِقْدَارِهِ العَظِيمِ
اللَّهُمَّ صَل عَلَى سَيِّدِنَا مُحَمَّدٍ ۞ الفَاتِحِ لِمَا أُغْلِقَ ۞ وَالخَاتِمِ لِمَا سَبَقَ ۞ نَاصِرِ الحَقِّ بِالحَقِّ ۞ وَالهَادِي إِلَى صِرَاطِكَ المُسْتَقِيمِ ۞ وَعَلَى آلِهِ حَقَّ قَدْرِهِ وَمِقْدَارِهِ العَظِيمِ
