There are some particles which are generally regarded as conditionals, e.g. (لمَّا) and (كلَّما). However, they express a temporal relationship rather than a condition. There are still 2 actions that are related to each other by a temporal relationship, for example:

لمَّا سافرَ أخي، سافرتُ معه.

“When my brother traveled, I traveled with him.”

كلَّماسافرَ أخي، سَافرتُ معه.

“Whenever my brother traveled, I traveled with him.”

لمَّا يسافرُ أخي، أسافرُ معه.

“When my brother travels, I travel with him.”

كلَّمايسافرُ أخي، أسافرُ معه.

“Whenever my brother travels, I travel with him.”

Other particles that are used in this way express a spacial relationship, for example:

حيثماسافرَ أخي، سافرتُ معه.

“Wherever my brother traveled, I traveled with him.”

أينماسافرَ أخي، سافرتُ معه.

“Wherever my brother traveled, I traveled with him.”

حيثما يسافرُ أخي، أسافرُ معه.

“Wherever my brother travels, I travel with him.”

أينمايسافرُ أخي، أسافرُ معه.

“Wherever my brother travels, I travel with him.”