Hadith 31-154

وَبِهذَا الإِسنادِ عَنِ الحُسَيْنِ بْنِ عَلِىٍ‏عَلَيْهِمَا السَّلاَمُ أَنَّهُ دَخَلَ المُستَراحَ، فَوَجَدَ لُقمَةً مُلقاةً، فَدَفَعَها إِلى غُلامٍ لَهُ فَقالَ: يا غُلامُ اذكُرنِي بِهذِهِ اللُّقمَةِ إِذا خَرَجْتُ، فَأَكَلَها الغُلامُ، فَلَمَّا خَرَجَ الحُسَيْنُ بْنُ عَلِىٍ‏عَلَيْهِمَا السَّلاَمُ قالَ: يا غُلامُ أَيْنَ اللُّقمَةُ؟ قالَ: أَكَلتُها يا مَوْلايَ، قالَ: أَنْتَ حُرٌّ لِوَجهِ اللَّهِ تَعالى‏، قالَ لَهُ رَجُلٌ: أَعتَقتَهُ يا سَيِّدي؟ قالَ: نَعَم، سَمِعْتُ جَدِّي رَسُولَ اللَّهِ‏ صَلَّى اللهُ عَلَيْهِ وَآلِهِ يَقُولُ: مَن وَجَدَ لُقَمَةً مُلقاةً فَمَسَحَ مِنْها أَوْ غَسَلَ ما عَلَيْها ثُمَّ أَكَلَها لَمْ تَستَقِرَّ فِي جَوفِهِ إِلّا أَعتَقَهُ اللَّهُ مِنَ النَّارِ [وَلَمْ أَكُن أَستَعبِدُ رَجُلاً أَعتَقَهُ اللَّهُ تَعالى‏ مِنَ النَّارِ]

According to the same documentation, on the authority of Al-Husayn ibn Ali (a.s.) it has been narrated that he entered the toilet and found a bite of food left there. He (a.s.) gave it to his slave and asked him to remind him about it when he leaves. The slave ate that bite of food. When Al-Husayn (a.s.) came out of the W.C. he asked the slave about it. The slave said, “O my Master! I ate it.” The Imam (a.s.) said, “You are free for the sake of God.” They asked him, “O my Master! Did you set him free?” Al-Husayn (a.s.) replied, “Yes. I heard my grandfather - God’s Prophet (S) say, ‘Whenever someone finds a bite of food that is thrown away and cleans it, washes it or eats it, God will free him from the Fire before the bite has gone down his throat.’ (Al-Husayn (a.s.) added, ‘I do not like to keep in slavery one whom God has set free.’”