The Buddha's final instruction to his monks was to be a lamp unto themselves, relying on no external refuge but their own disciplined practice
Rather than naming a successor, the Buddha pointed his monks toward the discipline and teaching itself as their lasting source of stability.
The Mahaparinibbana Sutta narrates the Buddha's final months, journey, and death, and includes some of the most quoted instructions in the Pali canon, delivered largely to his attendant Ananda. Facing his own approaching death and Ananda's evident distress, the Buddha tells his monks to be a lamp unto themselves — a phrase translators also render as an island unto yourselves, since the Pali word carries both senses — relying on no external refuge, but taking the Dhamma itself, and their own disciplined practice of it, as their reliable ground. Notably, the Buddha declined in this same sutta to appoint a single human successor to lead the sangha after him, instead telling the monks that the teaching and monastic discipline would themselves serve as teacher once he was gone. For a celibate monastic order that had depended on his living presence for decades, this final instruction reframed the discipline itself, not personal loyalty to a founder or a new authority figure, as the actual source of stability going forward.
Be a lamp unto yourselves, be a refuge to yourselves. Hold fast to the Dhamma as a lamp; hold fast to the Dhamma as a refuge.
Mahaparinibbana Sutta (Digha Nikaya 16)