score:2
In the following suttas, it was recorded that the Buddha sat in unbroken meditation for seven days, before emerging. This occurred right after he became fully enlightened.
I have heard that on one occasion, the Blessed One was staying at Uruvelā on the bank of the Nerañjarā River at the root of the Bodhi tree — the tree of awakening — newly awakened. And on that occasion he sat at the root of the Bodhi tree for seven days in one session, sensitive to the bliss of release. At the end of seven days, he emerged from that concentration.
Ud 1.4
Thus have I heard. At one time the Lord was staying at Uruvela, beside the river Nerañjara at the foot of the Bodhi Tree, having just realized full enlightenment. At that time the Lord sat cross-legged for seven days experiencing the bliss of liberation. Then, at the end of those seven days, the Lord emerged from that concentration and gave well-reasoned attention during the first watch of the night to dependent arising in forward order.
Ud 1.1
I have heard that on one occasion, the Blessed One was staying at Uruvelā on the bank of the Nerañjarā River at the root of the Bodhi tree — the tree of awakening — newly awakened. And on that occasion he sat at the root of the Bodhi tree for seven days in one session, sensitive to the bliss of release. Then, with the passing of seven days, after emerging from that concentration, he surveyed the world with the eye of an Awakened One. As he did so, he saw living beings burning with the many fevers and aflame with the many fires born of passion, aversion, & delusion.
Ud 3.10
Thus have I heard. At one time the Lord was staying at Uruvela beside the river Nerañjara at the foot of the Mucalinda Tree, having just realized full enlightenment.
At that time the Lord sat cross-legged for seven days experiencing the bliss of liberation. Now it happened that there occurred, out of season, a great rainstorm and for seven days there were rain clouds, cold winds, and unsettled weather. Then Mucalinda the naga-king left his dwelling place and having encircled the Lord's body seven times with his coils, he stood with his great hood spread over the Lord's head (thinking) to protect the Lord from cold and heat, from gadflies, mosquitoes, wind, sun, and the touch of creeping things.
At the end of those seven days the Lord emerged from that concentration. Then Mucalinda the naga-king, seeing that the sky had cleared and the rain clouds had gone, removed his coils from the Lord's body. Changing his own appearance and assuming the appearance of a youth, he stood in front of the Lord with his hands folded together venerating him.
Ud 2.1