Mentioned in the Visuddhimagga ¹ in reference to the epithet “anuttara” as applicable to the Buddha.
The Suttasaṅgaha (No.25) gives the name Aggappasāda Sutta to the first Sutta of the fifth chapter (vagga) of the Itivuttaka, Tika Nipāta.² The whole Sutta is found in the Aṅguttaranikāya,³ but the uddāna of the Aṅguttaranikāya calls it the Pasāda Sutta (q.v.)
¹ 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 Gārava Sutta.
² Itv.89 f. ³ A.ii.34 f.