'Umar bin Al-Khattab, may Allah be pleased with him, said: "If you fear that Nabidh may be too strong, then weaken it with water." 'Abdullah (one of the narrators) said: "Before it gets strong."
Sunan an-Nasa'i Book 51, Hadith 167
← Previous Hadith "I knew that the Messenger of Allah was fasting on certain days, so I prepared some Nabidh for him to break his fast, and made it in a gourd. When evening came I brought it to him, and said: 'O Messenger of Allah, I knew that you were fasting today, so I prepared this Nabidh for you to break your fast.' He said: 'Bring it to me, O Abu Hurairah.' I brought it to him, and it turned out to be something bubbling. He said: 'Take this and throw it against the wall (throw it away), for this is the drink of one who does not believe in Allah or the Last Day.'"

Sunan an-Nasa'i Book 51, Hadith 166 Next Hadith → "Thaqif welcomed 'Umar with a drink. He called for it, but when he brought it close to his mouth, he did not like it. He called for water to weaken it, and said: 'Do like this.'"

Sunan an-Nasa'i Book 51, Hadith 168