The ruling on one who offers a reward without specifying the amount to the one who returns his lost property
Machine translationRead the Arabic original
The questioner : A man said, "Whoever returns my lost property, he will have a reward." And he did not specify.
The Shaykh : Whoever returns my lost property, he will have the reward.
The questioner : And the Prophet (peace and blessings be upon him).
The Shaykh : Yes.
The questioner : And he tied this town to the condition that whoever returns the lost property will have one-tenth of its value, so the man found it and returned it, so is the value of the one-tenth required?
The Shaykh : No, he takes it. If he had said, "He will have a reward," he would take what was known, but he said, "He will have a reward," so it reverts to the fee of the like.
The questioner : Yes
The Shaykh : Yes.
The Shaykh : Whoever returns my lost property, he will have the reward.
The questioner : And the Prophet (peace and blessings be upon him).
The Shaykh : Yes.
The questioner : And he tied this town to the condition that whoever returns the lost property will have one-tenth of its value, so the man found it and returned it, so is the value of the one-tenth required?
The Shaykh : No, he takes it. If he had said, "He will have a reward," he would take what was known, but he said, "He will have a reward," so it reverts to the fee of the like.
The questioner : Yes
The Shaykh : Yes.
Source
قناة «فضيلة الشيخ محمد بن صالح العثيمين»، [5163] حكم من أطلق ولم يحدد جائزة لمن رد له ضالته - تعليقات على الكافي لابن عثيمين — youtube.com
The Arabic text is a machine transcription of the audio recording.