It is narrated from Sayyiduna Abu Hurairah, may Allah be pleased with him, that the Messenger of Allah, peace and blessings be upon him, said: "Whoever applies kohl should do so an odd number of times; if he does, it is better, and if he does not, there is no harm. And whoever performs istinja with stones should do so an odd number of times; if he does, it is better, and if he does not, there is no harm. And whoever eats food should use a toothpick, and if something comes out from the toothpick, he should throw it away, and if it sticks to his tongue, he should swallow it; if he does so, it is better, and if he does not, there is no harm. And whoever goes to relieve himself should conceal himself; if there is nothing to conceal him except a heap of sand, then he should sit behind it, because the devils play with a man's private parts. Whoever does so, it is better, and if he does not, there is no harm."
Hadith Takhrijاس روایت کی سند حسن ہے۔ دیکھئے: [صحيح ابن حبان 1410] ، [موارد الظمآن 132] ، [العلل للدارقطني 1570] و [مشكل الآثار 41/1] ۔ نیز دیکھئے: [أبوداؤد 25] و [ابن ماجه 327]
Narrated Abu Hurairah: The Prophet ﷺ said: If anyone applies collyrium, he should do it an odd number of times. If he does so, he has done well; but if not, there is no harm. If anyone cleanses himself with pebbles, he should use an odd number. If he does so, he has done well; but if not, there is no harm. If anyone eats, he should throw away what he removes with a toothpick and swallow what sticks to his tongue. If he does so, he has done well; if not, there is no harm. If anyone goes to relieve himself, he should conceal himself, and if all he can do is to collect a heap of send, he should sit with his back to it, for the devil makes sport with the posteriors of the children of Adam. If he does so, he has done well; but if not, there is no harm.
Shaykh Umar Farooq Saeedi
Benefits and Issues: This narration is weak. The matters within it that are established by other ahadith are actionable. It is not necessary to act upon the other matters.
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 35
Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings be upon him) said: "When a person uses pebbles (for cleaning), he should use an odd number, and when a person cleans his nose, he should do so an odd number of times."
Shaykh Muhammad Ibrahim bin Basheer
Benefit: From this hadith, it is understood that we should perform every action mentioned in the hadith an odd number of times.
Source: Musnad al-Humaydi: Commentary by Muhammad Ibrahim bin Bashir, Page: 986