A man from the enemy's city appeared in the sky above Rāma's camp and asked for refuge.
That was enough to make the camp reach for weapons.
The man was Vibhīṣaṇa, younger brother of Rāvaṇa. He came with four companions from Laṅkā, the city Rāma's army was preparing to attack.
Before leaving, Vibhīṣaṇa had repeatedly urged Rāvaṇa to return Sītā. His advice had been rejected, and he had been insulted.
But none of that automatically made him safe.
From the vānaras' point of view, an armed brother of the enemy king had arrived unexpectedly above their position.
Sugrīva immediately suspected a trap. Rāvaṇa might have sent Vibhīṣaṇa to enter the army, learn its weaknesses and strike when trust had been granted.
Some vānaras were ready to attack the five figures before they came down.
Vibhīṣaṇa remained in the sky and announced who he was. He named Rāvaṇa as his brother, said that he had urged him to return Sītā, and said that he had left Laṅkā to seek Rāma's protection.
Sugrīva carried the problem to Rāma.
Rāma did not dismiss Sugrīva's fear.
He asked the leaders around him to give their opinions one by one.
Aṅgada advised caution. Other leaders proposed testing, questioning or watching the newcomer before accepting him.
Then Hanumān spoke.
Hanumān had already been inside Laṅkā and had observed its people. He also pointed out a practical difficulty in some of the proposed tests: you cannot fully discover a stranger's ability or character without first entrusting something to him, and that itself creates risk.
So he looked instead at Vibhīṣaṇa's words, the timing of his arrival, what he knew of Rāvaṇa, and the reasons someone in Laṅkā might judge Rāma's side to be the better one.
Hanumān argued for accepting him.
Rāma then stated his own position.
His decision was larger than whether Vibhīṣaṇa personally seemed pleasant or whether every doubt had been removed.
Rāma said that someone who came seeking refuge and said, even once, I am yours, would receive safety from him.
Sugrīva still pressed the danger: what if someone who abandoned his own brother in difficulty later abandoned them too?
Rāma kept the rule.
He pushed it to its sharpest edge. Bring him, he said — whether the one asking is Vibhīṣaṇa or even Rāvaṇa himself, the assurance of safety has been given.
Only then did Vibhīṣaṇa come down.
He prostrated himself and identified himself plainly: Rāvaṇa's younger brother, rejected after giving counsel, leaving behind Laṅkā, family ties and possessions, now seeking protection.
Rāma accepted him.
Vibhīṣaṇa then gave information about Rāvaṇa and Laṅkā. Rāma promised that Rāvaṇa would be defeated and that Vibhīṣaṇa would become king.
Lakṣmaṇa brought water from the sea, and Vibhīṣaṇa was ceremonially recognized as Laṅkā's future ruler.
Nothing in the episode asks the listener to pretend there was no security problem.
Sugrīva's suspicion is not mocked. The camp really is at war, and Vibhīṣaṇa really does come from the other side.
That is why the refuge pledge has weight. If safety were promised only after all danger had disappeared, the rule would cost almost nothing.
The advisers do not all object for the same reason. Aṅgada wants the stranger examined; others propose questioning him before trust is given. The camp is deciding with incomplete information.
Hanumān's answer is equally practical. A spy sent to investigate Vibhīṣaṇa cannot easily test a man who has just arrived openly in front of the whole camp, and assigning him work only to see how he behaves would itself require trust. Hanumān therefore weighs the facts already visible instead of pretending certainty can be manufactured.
Rāma also distinguishes his pledge from a claim that Vibhīṣaṇa must be perfect. He says that he will not reject someone who comes in the appearance of friendship even if defects exist. The refuge is a commitment made by Rāma; it is not a certificate saying the newcomer has been proven flawless.
Rāma makes the promise while the doubt is still standing in front of him, because that is the moment a promise of refuge has to mean something.