दो हफ़्तों

two weeks

→ दो
phrase Rare #10,504
two weeks हफ़्तों is an oblique plural form, commonly used before postpositions such as में (“in”) and तक (“for” or “until”).
HI: मैं दो हफ़्तों में वापस आऊँगा।
EN: I'll be back in two weeks.