Icchānaṅgalasutta

sn54.11:1.1 At one time the Buddha was staying in a forest near Icchānaṅgala.

sn54.11:1.2 There he addressed the mendicants,

sn54.11:1.3 “Mendicants, I wish to go on retreat for three months.

sn54.11:1.4 No-one should approach me, except the one who brings my almsfood.”

sn54.11:1.5 “Yes, sir,” replied those mendicants. And no-one approached him, except the one who brought the almsfood.