Analysis of information sources in references of the Wikipedia article "Iqama" in English language version.
As for the iqama, Malik, al-Shafi'i, and Ahmad said the phrases should be said once, but Ahmad said saying them twice is also legislated. All three of them—Abu Hanifa, al-Shafi'i, and Ahmad—preferred to say qad qāmati ṣ-ṣalāhtu twice, but Malik did not. And God knows best.