Mentioned in the Visuddhi Magga* in reference to the epithet "anuttara" as applicable to the Buddha.
* i.207; also Sp.i.120 and KhA.19. The sutta has not been traced. It has been suggested (Vm.i.207, n.2), that it is the same as the Gárava Sutta.
The Sutta Sangaha (No. 25) gives the name Aggappasáda Sutta to the first Sutta of the fifth Vagga of the Itivuttaka, Tika Nipáta (Itv.89f). The whole Sutta is found in Anguttara (ii.34f.), but the uddána of the Anguttara calls it Pasáda Sutta.
See Pasáda Sutta (2).