´It was narrated that Dawud said:` "I asked Sa'eed: 'What is the drink that 'Umar bin Al-Khattab, may Allah be pleased with him, regarded as permissible?' He said: 'That which has been cooked until two-third has gone and one-third is left.'"
Hadith Referenceسنن نسائي / كتاب الأشربة / 5722
Hadith Gradingالألبانی:صحيح لغيره | زبیر علی زئی:إسناده صحيح