Sīlaggaṁ, samādhiggaṁ, paññāggaṁ, vimuttaggaṁ—  The best ethics, immersion, wisdom, and freedom. 
samādhiggaṁ → samādhaggaṁ (bj, cck, sya2ed, km, pts1ed); samadhaggaṁ (sya1ed) 

“Sukhaṁ kho, ānanda, samādhatthaṁ samādhānisaṁsan”ti.  “Immersion …” 
sukhaṁ samādhatthaṁ samādhānisaṁsaṁ; 
Immersion is the purpose and benefit of bliss. 

sukhaṁ samādhatthaṁ samādhānisaṁsaṁ;  Immersion is the purpose and benefit of bliss. 

“Sukhaṁ kho, ānanda, samādhatthaṁ samādhānisaṁsaṁ”.  “Immersion …” 
sukhaṁ samādhatthaṁ samādhānisaṁsaṁ, 
Immersion is the purpose and benefit of bliss. 

Iti kho, bhikkhave, virāgo vimuttiñāṇadassanattho vimuttiñāṇadassanānisaṁso, nibbidā virāgatthā virāgānisaṁsā, yathābhūtañāṇadassanaṁ nibbidatthaṁ nibbidānisaṁsaṁ, samādhi yathābhūtañāṇadassanattho yathābhūtañāṇadassanānisaṁso, sukhaṁ samādhatthaṁ samādhānisaṁsaṁ, passaddhi sukhatthā sukhānisaṁsā, pīti passaddhatthā passaddhānisaṁsā, pāmojjaṁ pītatthaṁ pītānisaṁsaṁ, avippaṭisāro pāmojjattho pāmojjānisaṁso, kusalāni sīlāni avippaṭisāratthāni avippaṭisārānisaṁsāni.  And so, mendicants, the knowledge and vision of freedom is the purpose and benefit of dispassion. Dispassion is the purpose and benefit of disillusionment. Disillusionment is the purpose and benefit of truly knowing and seeing. Truly knowing and seeing is the purpose and benefit of immersion. Immersion is the purpose and benefit of bliss. Bliss is the purpose and benefit of tranquility. Tranquility is the purpose and benefit of rapture. Rapture is the purpose and benefit of joy. Joy is the purpose and benefit of not having regrets. Not having regrets is the purpose and benefit of skillful ethics.