A two-member parliamentary delegation headed by Punjab Assembly Speaker Rana Muhammad Iqbal will leave for Sri Lanka on Saturday (today) to take part in the Commonwealth Conference. All member countries of the Commonwealth are attending the conference being held in Colombo from September 7 to 15. Malik Noushir Khan Langrial, a PPP legislator from Vehari, and Assembly Secretary Maqsood Malik are other members of the delegation.