1 Question: Is the Third Testimony a part of Adhan and Iqamah?
Answer: Ash hadu anna Amiral Mu'minina Aliyyan waliyyullah is not a part of either Adhan or Iqamah. But it is preferable that it is pronounced after Ash hadu anna Muhammadan Rasulul lah with the Niyyat of Qurbat.
2 Question: If any one is praying at home, does he require to call Adhan for each prayer followed by Iqamah?
Answer: It suffices to call Adhan for both prayers if he/she combines between the prayers.