Afghanistan left-arm spinner Noor Ahmad led a disciplined bowling effort as Chennai Super Kings restricted a lacklustre Mumbai Indians to 159 for seven in a critical IPL match here on Saturday.

Noor returned excellent figures of 2-26 in four overs while Anshul Kamboj grabbed 3-32, even as Naman Dhir top-scored for MI with 57 off 37 balls in an insipid display by the visitors after winning the toss.