Is Al-Qa'qa' ibn Amr al-Tamimi a Companion (Sahabi)? And did Abu Bakr al-Siddiq say about him: "An army that includes Al-Qa'qa' is an army that will not be defeated"?

Al-Qa'qa' ibn Amr al-Tamimi is said to have been a Companion (Sahabi), but this has not been proven with sound evidence. The two narrations used to substantiate his companionship have weak chains of transmission due to the presence of Sayf ibn Umar al-Dabbi, who is considered to have abandoned Hadith (definition). Therefore, he remains one of the great Tabi'in (successors of the Companions). He was renowned for his horsemanship and bravery; it was said that his voice in the army was better than a thousand men. He participated in the Wars of Apostasy (Ridda Wars) and the conquests of Iraq, Syria, and Egypt. He was also a poet, and his poetry serves as an accurate historical document describing battles. Although most of the accounts about him come from Sayf ibn Umar al-Dabbi and al-Waqidi, both of whom are weak in Hadith, their historical narrations are acceptable as long as they do not contradict established facts or contain legal rulings. He died after the year 41 AH, and the exact location of his death is not specified.