Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
The fine sieve (Mankhul) in a dream indicates knowledge and distinction. It is a knowledgeable man who distinguishes between truth and falsehood.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
The fine sieve indicates a trustworthy servant. Whoever sees himself sieving flour with it will gain lawful money.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
The fine sieve is interpreted as a righteous man. Whoever sees that he owns one has befriended a righteous man.