Though nowhere in the Bible do we find the words "salvation is by faith alone", it is clearly indicated in many verses.
The Reformation doctrine of sola fide is based upon these verses, the most well known is Jn.3; 16 " For God so loved the world, that He gave His only begotten Son, so that whoever BELIEVES IN HIM SHALL NOT PERISH but have eternal life" I see nothing about works here.
The thief on the cross wasn't able to do any good works, yet he was saved solely by faith.
Salvation by faith alone results in good deeds, works, whatever term you want to use.
Grace, the totally unmerited favor of God provides the opportunity to be saved by faith, alone. That salvation and faith naturally leads to the Christian life, which results in treating your neighbor as yourself which is the fulfillment of the entire law.