References – Snp 4.4: Eight on the Pure 
Readings by Ajahn Pasanno:
The Island by Ajahn Pasanno and Ajahn Amaro, Chapter 14, pp. 258-265:
Suttas: SN 35.82; SN 35.116; MN 8.3; SN 4.16; SN 35.90; SN 35.248; Snp 954; MN 72.15; SN 12.51; MN 138.3; Snp 839; Snp 794-5; Snp 812-13; Snp 537; Dhp 421; Dhp 348.
A Still Forest Pool by Ajahn Chah (commercial) p. 73.
SN 35.248: Yavakalāpī.
Readings from The Island [2025], Session 35
“The phrase, ‘the knot of grasping’ (in Snp 794); is that upādāna?” Answered by Ajahn Pasanno. [Clinging] // [Translation]